deming



Patented Dot. 4, I898.

N0. 6ll,609.

F. DEMING.

TUBE ROLLING MACHINE.

(Application filed m 21, 1897.)

5 Sheets-Sheet I.

(No Model.)

Inventor.

awa' auwi 4% Attorneys Witnesses.

MM/gM m: NORRIS PETERS co, Pnoflmu'rm:vv WASHINGYON. n. c.

No. 6ll,6 09. Patnted Oct. 4,1398. F. DEMING.

TUBE ROLLING MACHINE.

(Application filed. May 21, 1897.)

(No Model.) 5 SheetsSh|aet 2.

Witnesses. Inventor.

' Attorneys w: NORRIS PETERS co Pum'ourum, wnsmncn'on. mc.

N 5 09 Patented Oct. 4, I898.

F. DEMIN'GJ TUBE ROLLING MACHINE. (Application filed May 21, 1897.)

(No Model.)

5 Sheets-Sheet 3.

Exgi... Withessesr Inventor.

no 7 THE NORRIS vzrzns so. mom-mun, WLHINGTON m. 611,609) Patented Oct.4, 13198.

F. mzmma.

'TUBE RULLING MACHINE.

(Application filed May 21, 1897.) QNn Model.) 5 Sheets$hegt 4.

Witnesses.

Inventor fa Mazda;

ttor'neyS Nu. 6ll,609. Patented Oct 4, I898.

F. DEMING.

TUBE ROLLING MACHINE;

(Application filed May 21, 1897.)

(N0 Model.)

5 S heetsSheet 5.

Witnesses. W I Inventor.

@Vy/V Attorneys ms mama mm: co PHOT0-LlTHO- wnswium'on, u. c.

N 1th "Tens.

prion.

FERDINAND DEMING, OF \VATERBURY, CONNECTICUT, ASSIGNOR TO GEORGE H.CLOWES, OF SAME PLACE.

TUBE-ROLLING MACHINE.

SPECIFICATION forming part of Letters Patent No, 611,609, dated October4, 1898.

Application filed May 21, 1897.

To all whom it may concern:

Be it known that I, FERDINAND DEMING, a citizen of the United States,residing at \Vaterbury, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inTube-Rolling Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to a new and improved machine for rolling tubesfrom a strip of metal, the finished tubes being of that class known asbrazed tubing.

The object of my invention is to provide means composed of few parts,and those of simple design, to roll the tube, to combine means forautomatically stopping the roll mechanism when a tube has been rolled ofa predetermined length, and to economize floorspace as well as theexpense of constructing and operating the machine.

To this end my invention consists of the tube-rolling machineconstructed and operating as hereinafter fully described, and moreparticularly pointed out in the claims.

Referring to the drawings, in which like numerals designate like partsin the several views, Figure-1 is a front elevation of my improvedtube-rolling machine. Fig. 2 is a plan view of the same. Fig. 3 is asection of the bed extension upon line A B of Fig. 1, showing a sideelevation of the saw and tubereceiving mechanism. a Fig. 4 is a sectionof the roll-frames upon line C D of Fig. 1. Fig. 5 is a section of thetrough-stand upon line E F of Fig. 1. Fig. 6 is a section of the finishing-rolls upon line G H of Fig. 1. Fig. 7 is a section of theguide-frame upon line as :0 of Fig. 1. Fig. 8 is a side elevation of thetriblet. Fig. 9 is a plan view of the same. Fig. 10 is an end elevationof the straightening mechanism. Fig. 11 is a section of the clutchmechanism upon line was of Fig. 2. Fig. 12is a transverse section of themetal strip after passing through the first pair of rolls. Fig. 13 is atransverse section of one form of a tube as completed by this machine.

I will first describe the construction of the roll mechanism that formsthe tube and later of said frames.

Serial No. 637,518. (No model.)

the mechanism for determining the length of the same and forautomatically stopping the roll mechanism and the saw device for cuttingoff the tube at its predetermined length. Two pairs of rolls are used toshape the tube, the first pair forming the bottom of the tube by bendingthe strip of metal longitudinally into a U-shape strip and. the lastpair finishing the tube by folding the sides of the strip of metal overtoward each otherupon a triblet or formingemandrel,

The numeral 1 designates the bed of the machine, supported upon the legs2 2 and secured to the top side of which are the rollshaft. frames 3 4.3 i. Bottom roll-shafts 12 12 are journaled in the lower solid portionof the frames 3 4 3' 4. and are held against end movement by the collar13 upon the front side and the spur-gear 18 upon the rear side Upperroll-shafts 14 14 are adjustable to a limited degree and are jour naledin the shaft-boxes 8 9 8 9, which are fitted into the open throat of theroll-shaft frames 3 4 3 4. The boxes 9 9 in the rear frames 3 3 aresecured by the swivel-pins 1O 10, and the boxes 8 8 in the front frames4 are free to slide vertically, being held against end movement by thelaterally-pro jecting lips 11 11 upon the front side thereof. Thethreaded rods 6 6, operating in the caps 5 5' of the front frames at 4.and rotated by means of the hand-wheels 7 7, provide meansv to adjustthe shafts 14. 14.. The rods 15 15, bearing against the underside of theboxes 8 S and resting upon a coil-spring 16 16 in the lower portion ofthe roll-frames 4. 4, hold the box permanently against the bottom of thesaid rods 6 6 while in any adjusted position. A rotary motion isimparted to the lower rollshafts 12 12 through the bevel-pinions 17 17and bevel-gears 19 19 and to the upper rollshafts 14. 14. through thespur-gears 18 18, which are rigidly secured to the said shafts. Thespur-gears 18 18 upon the upper roll shafts are held against rotation bya key of ordinary construction and against end play by the washers 2O 20and bolts 21 21. The

guide-frame 22.

clined face is an antifriction-roll 24 24. The projecting lip upon theguide-strips 25 25 holds the strip down against the guide-frame. Theguide-frame 22 is bolted to the top face of the upright 23, the saidupright being fastened to the bed of the machine. Located between therolls in a line therewith and secured to the top of the bed 1 is thetrough stand 26, mortised in the upper face of which is the guide-trough27, extending longitudinally throughout its length. Adjacent to eachpair of rolls and projecting upward from either side of the trough-stand26 are the integral lugs 28 28, joined by the caps 29 29. A guide-roll30 is loosely mounted in the forked end of the roll-bar 31, whichprojects through a central hole in the cap 29 and is held by theset-screw 32. The guide -roll serves to hold the metal strip in theguidetrough 27 and prevents it from jumping upward. The size or shape ofthe trough 27 and the guide roll 30 may be varied or changed so as toconform to the tube that is being rolled. A triblet or forming-mandrel33, suspended between the last pair of rolls, (see Fig. 1,) is used toshape the interior of the tube. It is held rigid in the cap 29 by theset-screw 34. The outer end or that portion of the triblet which liesbetween the rolls is shaped to conform to the interior of the tube, andfrom that point it is backed off gradually away from the roll end untilit assumes the same shape as the inside of the strip as it leaves thefirst pair of rolls.

A section of the first pair of rolls is shown in Fig. 4, the upper rollconsisting of a circular disk 38 with a rounded periphery and ofsubstantially the same width as the inside diameter of the tube. Thelower roll 39 has a peripheral groove 40 out in its face ofsubstantially the same width and depth as the metal strip to be rolled,and in the center of said groove is a deeper peripheral groove 41, thebottom of which is rounded to conform to the outside of the tube. Eachof the second pair or finishing-rolls (a section of which is shown inFig. 6) has a semicircular groove in its face of the same diameter asthe outside diameter of the rolled tube, the groove in the upper roll 42having flaring sides terminating at the bottom in the above-mentionedsemicircular groove, and the face of the lower roll 43 is cut away, sothat it will fit into the groove with flaring sides of the upper roll.Upon either side of all of the rolls is an annular ring or washer 44,the thickness of which is determined by the width of the roll. The saidrolls are secured against rotation to their respective shafts by afeather of any common construction, and the washers 45 and bolts 46 holdthem rigid against end play.

The straightening device comprises a stand 47, secured to the bed of themachine adjacent to and in a line with the finishing -rolls and providedwith a series of straightening- :rolls 48 48 48 48. The lower stationaryrolls 48 48 are mounted between the walls of the slot 49 in the standand rotate upon the central shaft 50. The upper rolls 48 48 areadjustable Vertically and are mounted upon studs 51 in the slides 52 52,the slides being raised and lowered by the screws 53 53, the lowerportions of which are pinned to the said slide and the threaded portionoperating in the lip 54, projecting from the back of the stand. WVhenthe slide has been adjusted to its proper position, it is held rigid bythe screws 55 55, which reach through an elongated slot 56 in the backof the stand and screw into the lower portion of the slide. 57designates a loose pulley upon the horizontal shaft 58, which drives thesaid shaft by means of the clutch mechanism, consisting of the collar59, having a peripheral groove 60 for the reception of the yoke end 61of the shifting lever 62 and adapted to throw the feather 63, which isfitted into a spline in the horizontal shaft, into register with theradial slot 64 in the hub of the loose pulley. Then the feather 63registers with the said slot, the coilspring 66 throws the feather intothe said slot, thus uniting the pulley and shaft, causing the rolls torotate. When it is desired to stop the machine, the collar 59, with theaid of the lever 62, is pushed along the shaft away from the pulley, andby means of the head upon the feather the feather is drawn out of theslot 64, releasing the pulley and stopping the shaft. The shifting lever62 is pivotally mounted on the bracket 67, with the handle end 68reaching out over the front of the machine, so as to be in a convenientposition for the operator. A latch-bar 70, which is bolted to the stand47, supports the outer end of the shifting lever 62, and thespring-actuated latch 69 looks the shifting lever (see Fig. 1) againstdisplacement when the machine is running. Coil-spring 72, one end ofwhich is secured to the latch 69 and the other end to a pin 71 in thelatch-bar 70, holds the latch 69 ina locked position, except when it istripped by the mechanism present-1y to be described. The bed extension73 is bolted at one end to the bed 1 by the bolts 74 74 and supported atthe other end by the leg 75. Suspended over the bed extension 73 is thereceiving-tube 76, split longitudinally into the two portions 76 76 theportion 76 of which is held rigid by the brackets 77, fastened at theirbase to the bed extension 73 and provided with a bearing at their upperends for the oscillating shaft 78. That portion of the receivingtubedesignated 76 is fastened to the depending arms 79, which are rigidlysecured to the oscillating shafts 78. WVhen an oscillating motion isimparted to the said shaft, the depending arms carry the portion 76 ofthe receiving-tube away from the stationary portion 7 6, opening thereceiving-tube from end to end and allowing the contents of the tube todrop out upon the bed extension 73.

In the outer end of the receiving-tube 76 is the trip-plunger 80, havinga reduced stem lIO 81, adjustably secured in the block 82 by a set-screw83, the said block being loosely joined to the upper end of thetrip-lever 84. Trip-lever S4 is fulcrumed in the forked outer end of thestud 8'7, and pivotally connected to the lower end thereof is a trip-rod85, which extends from said lever through the end of the bed extension 73 and terminates at a projecting lug 86 upon the latch 69. The circularsaw 88 is mounted upon the saw-arbor 89, adjacent to the flangeddriving-pulley 90, and held against the flange of said pulley by thewasher 91 and nut 92. 93 designates the sawslide, having j ournaled inits upper yoke portion the saw-arbor 89and the lower portion of whichtravels in the ways 94 94, integral with the bed 1 and covered by theindependent caps 95 95. A backward-and-forward movement is imparted tothe saw-slide 93 through a toggle-joint composed of the two links 96 90the outer ends of which are pivoted to the studs 97 98, permanentlyfixed to the slide 93 and the bed 1, respectively. Keyed to one end ofthe rock-shaft 99, upon the other end of which is rigidly secured thelink 96 is a hand-lever 100,which When drawn toward the front of themachine throws down the links of the toggle-joint and forces thesaw-slide forward. When the lever is released, the spring 101, which isfastened atone end to the lever 100 and at the other to the bracket67,carries the lever back to its original position and with it thesaw-slide. Fastened to one side of the saw-slide 93 by the screw 102 isthe yoke-bar 103, provided with the longitudinal slot 117 near its outerend, in which is adjusted the yoke-stud 104, the said yokestud beingfastened in any adjusted position by the nut 105 under the yoke-bar andupon the threaded portion of the yoke-stem. Leverarm 106 at its upperend is pinned to the oscillating shaft 7 S and pivotally secured at itslower end to the horizontal link 107 by the stud 108. The opposite endof said horizontal link is fitted between the sides of the yokestud 104and provided with an elongated slot 109. The pin 110, which extendsthrough the slot 109 of the horizontal link 107, is fastened rigidly inthe yoke-stud 104, but slides freely in the said slot. Coil-spring 111,fastened at one end to a stud 112 in the horizontal link and at theother to a stud 113, screwed to the bed of the machine, is designed tonormally hold the lever-arm 106 in its retracted position.

The operation of my improved tube-rolling machine is as follows: A flatstrip of metal of the proper width and thickness is delivered to thefirst pair of rolls over the upper face of the guide-frame 22 andbetween the guidestrips 25 25, the anti friction-rolls 24 24 reducin gthe friction where the strip bends over the ends of the guide-frame. Themetal strip can be delivered from a roll of metal or it may be deliveredin lengths; but I prefer to use a roll,

as it requires less room and can be handled much more easily than longstrips of metal. Furthermore, after the strip has been started in themachine the roll requires no further attention by the operator. Then thestrip has been fed between the first pair of rolls byhand, the frictionof the rolls upon its sides will draw in the balance of the stripwithout the aid of the operator. The forming-rolls are now started bymeans of the clutch mechanism above described, and the latch 69 looksthe shifting lever against accidental displacement while the rolls arerunning. The metal strip is bent into a U shaped strip by the first pairof rolls, as illustrated by Fig. 12. When the U-shaped strip leaves thefirst pair of rolls, it is carried through the guide-trough 27, underthe triblet 33, and between the second pair of rolls. A stripper 114,with a forked end, is fastened to the top of the trough-stand 26,adjacent to the first pair of rolls, and strips the U-strip from therolls and leads it into the guidetrough, thus preventing the strip fromencircling the rolls. The guide-roll 30 holds the strip in the bottom ofthe trough as it is fed through. The sides of the U-strip first comeinto contact with the flaring sides of the groove in the top roll of thesecond pair, which turn them over toward each other upon the triblet andcomplete the tube, the triblet being a central mandrel and determiningthe inside diameter of the tube. tube leaves the second pair of rolls,it is carried between the straightening-rolls, which reduce allunevenness or crookedness in the tube. From the straightening-rolls itis carried through the end support 115, upon the outer end of the stand47, and thence into the receiving-tube 7 6. As the rolled tube reachesthe trip-plunger 80 it forces it outward and oscillates the trip-lever84, which pushes the end of the trip-rod 85 against the lug 86 upon thelatch 69, releasing the said latch and the shifting lever 62; Theshifting lever being new free, the fiat spring 116,which is fastened tothe bed and which bears against the said lever, throws it over so thatthe clutch mech-, anism is released, stopping the forming-rolls and thetube-making mechanism. At this stage the operator grasps the lever 100and cuts off the tube by means of the saw mechanism above described atthe proper predetermined length. When the saw has COIIP. pletely severedthe tube, the pin 110 in the yoke-stud 104, which is rigidly secured to.the saw-slide by means of the yoke-bar, reaches the end of the slot 109in the horizontal link and pushes forward the lower-end of the lever-arm106, which oscillates the shaft 78 and opens the receiving-tube 76,allowing the newly-rolled tube to fall out upon the bed extension 73 ora table placed adjacent thereto to receive it. The operator now releaseshis hold upon the lever 100, which is immediately drawn back to itsoriginal position by means of the spring 101 and carries with it the saw88. As the saw-slide recedes the spring 111, fastened to the horizontallink 107, draws back the lever-arm 106 and closes the receiving-tube.The lever 100, the

When the IIO lever-arm 106, the depending arm 79, and the portion 76 ofthe receiving-tube when in their extreme forward positions arerepresented by the broken lines in Fig. 3. The end support 115 isfastened to the overhanging lip of the stand 47 and is designed to holdthe tube rigid during the sawing operation. The hole bored through it isof the same diameter as the tube, with the mouth of the bore enlarged,so that the tube may readily enter the support. When the operatorreleases the lever 100, he grasps the shifting lever 62 and starts therolls again by means of the clutch mechanism. The latch locks theshifting lever in position, and the machine starts, as before, to rollthe strip into a tube and continues until the tube reaches thetrip-plunger, when the forming-rolls are again stopped automatically andthe sawing operation is repeated as before.

Tubes of any size and of a great variety of shapes in cross-section canbe rolled by the mechanism described by simply changing the shape of theforming-rolls.

Heretofore there has been great difficulty in cutting any number oftubes an equal length, it requiring the services of additional help tomeasure and to cutthem off. A common method is to cut the fiat stripsinto lengths before they are run through the rolls, an operationrequiring much additional labor and necessitating a large amount offloorspace to accommodate the strips. In my machine the metal strip isfed to the machine from a roll, which may be of any length, and byadjusting the trip-plunger the tubes can be cut off to any predeterminedlength accurately and without further measurements. The saw mechanism issimple, compact, and readily operated by the same person operating theforming-rolls.

Another feature of my invention is the fact that the rolls can beremoved from the rollshaft at pleasure by removing a single bolt, andthat in the front of the machine where it can be readily reached by theoperator.

It is manifest that many minor changes can be made in my invention asidefrom those herein shown, and I would therefore have it understood that Ido not limit myself to the exact construction herein shown anddescribed, but hold myself at liberty to make such changes andalterations as fall fairly within the spirit and scope of my invention;but

What I do claim as new, and desire to secure by Letters Patent, is-

1. In a tube-rolling machine, in combination with the roll-drivingmechanism, a first pair of rolls to form the strip into a substantiallyU shape and a second pair of rolls to fold the sides of the U-strip intoa tubular form, one of the said first pair of rolls having a groove inits periphery of substantially the width and depth of the fiat-metalstrip, a deeper groove in the center of the aforesaid groove ofsubstantially-the same shape as the outside of the said U-strip, theother of said rolls having a periphery of substantially the same shapeas the inside of the said U-strip; each of the rolls in the said secondpair having peripheral grooves of substantially the shape of one-halfthe contour of the finished tube, the periphery of one of said secondpair of rolls overlapping the periphery of the other of said rolls andhaving flaring sides extending from the outside diameter of the saidroll to the said groove, substantially as set forth.

2. In a tube-rolling machine, the combination of rolls to form the tube,mechanism to rotate said rolls, means for automatically stopping therotation of said rolls when a tube of predetermined length has beenformed, and means for straightening the rolled tube with means forcutting off the same, substantially as set forth.

3. In a tube-rolling machine in combination with the tube-forming rollsand the rotating mechanism means for straightening the said tube afterit has passed through the said rolls and means for automaticallystopping the said rotating mechanism when a tube of a predeterminedlength has been formed, substantially as set forth.

4:. In a tube-rolling machine, in combination with the tube-formingrolls, mechanism to rotate said rolls, clutch mechanism to connect saidrotating mechanism with the powerreceiving mechanism, a lever to operatesaid clutch mechanism, a spring-actuated latch device to normally looksaid lever, and means for tripping said latch to release the said leverwhen a tube has been rolled of a predetermined length, substantially asset forth.

5. In a tube-rolling machine in combination with the tube-forming rollsand their rotating mechanism clutch mechanism for driving the saidrotating mechanism, a springactuated latch to hold the lever of saidclutch mechanism in a locked position, atwo-part receiving-tube fortemporarily supporting the rolled tube after it has passed through thetube-forming rolls,an adjustable trip-plunger within the saidreceiving-tube and means for connecting the said trip-plunger with thesaid spring-actuated latch whereby the said lever may be released when atube has been rolled of a predetermined length, substantially as setforth.

6. In a tube-rolling machine comprising tube-forming rolls and theirrotating mechanism, clutch mechanism for driving the said rotatingmechanism, and a spring-actuated latch for retaining the lever of saidclutch mechanism in a locked position, the combination therewith of asaw mechanism, an oscillating shaft, a two-part receiving-tube fortemporarily supporting the rolled tube one portion of which is connectedwith the said oscillating shaft, a trip-plunger Within the saidreceiving-tube, a trip-rod connecting the said spring-actuated latch andthe trip-plunger mechanism, and means for uniting the a guide-troughbetween the first and the second said saw mechanism with the saidoscillating shaft and imparting thereto its oscillating movement,substantially as set forth.

7. In a tube-rolling machine comprising rolls and their rotatingmechanism, the combination therewith of means for cutting off the rolledtube, a two-part receiving-tube for supporting the said rolled tube,means Within the said receiving-tube for stopping the said rotatingmechanism and means for opening the said receiving-tube when the tubehas been cut off, the said means being operated by the said sawmechanism, substantially as set forth.

8. In a tube-rolling machine, in combination with the forming-rolls, aguide-frame provided with antifriction-wheels to'deliver the metal stripcentrally to the first pair of rolls,

pair of said rolls to guide the strip to the said second pair of rolls,a stripper located adjacent to the first pair of rolls to free the stripfrom the rolls and aid it in entering the said guide-trough, anantifriction-roll device to hold the said strip against the bottom ofthe said guide-trough and a triblet or mandrel suspended between thefinishing-rolls, substantially as set forth.

' 9. In a tube-rolling machine, the combination of the forming-rolls,mechanism for rotating said rolls, a trough-stand between said rolls,astripper secured to said stand adjacent to the first pair of rolls, aguide-trough in the upper face of said stand, and an antifrictionrolldevice adjustably secured to the said stand to hold the metal stripagainst the bottom of the said guide-trough, with a triblet suspendedbetween the finishing-rolls and held in such suspended position by thesaid guide-stand, substantially as set forth.

10. In a tube-rolling machine, mechanism for guiding the metal stripfrom the first to the second pair of rolls comprising a stand secured tothe bed of the machine, in the upper face of which is a troughconforming substantially to the shape of the metal strip that is guidedthrough the same, upwardlyprojecting integral lugs upon said stand, acap joining each pair of said lugs, a roll device, for holding the saidstrip against the bottom of the said trough, suspended in one of saidcaps and a triblet or forming-mandrel suspended in the other of saidcaps, substan tially as set forth.

11. In a tube-rolling machine, the combination of thelongitudinally-split receivingtube 76, the brackets 77 supportingone-half nation of the receiving-tube, the saw mounted in the saw-slide,means for imparting a rotary and a reciprocating motion to said saw, andan oscillating shaft adapted to open the said receiving-tube, with levermechanism connected with the said saw-slide and oscillating shaftwhereby an oscillating motion is imparted to said shaft, substantiallyas setforth.

13. In a tube-rolling machine, the combination of the receiving-tube 76with its supporting mechanism, the saw-stand 93, the yoke-bar 103rigidly secured to said sawstand, a yoke-stud 104 adjustably secured tothe said yoke-bar, a lever-arm 106 one end of which is pinned to thesaid oscillating shaft, and a horizontal link 107 pivotally secured tothe said lever-arm at one end and the other end adapted to slide in thesaid yoke-stud, with a pin 110 extending through said yoke-stud and aslot in the end of the said horizontal link, substantially as set forth.

14:. In a tube-rolling machine, sawing mechanism composed of a standcarrying the sawarbor and having a reciprocating motion, the

said motion being imparted thereto by means of a rock-shaft locatedadjacent thereto and operated by a lever keyed to said shaft and atoggle which connects the said rock-shaft with the said stand, asaw-arbor journaled in the said stand and rotated by a pulley upon said.arbor and a circular saw mounted upon said saw-arbor, substantially asset forth.

15. In a tube-rolling machine, a straightenin g device comprising astand 47 provided with an overhanging lip 54:, one or more nonadjustablerolls 48 mounted in said stand, one or more adjustable rolls 4l8, one ormore slides 52 adapted to be adjusted by a screw 53 operated in the saidlip 54.- and means, as the bolt 55, for fastening the said slides in anyadjusted position, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FERDINAND DEMING. Witnesses:

WILLARD R. CARROLL, GEORGE E. HALL.

too

